Leases - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Operating Lease, Monthly Lease Payment	$ 53,000
Operating Lease, Expense	752,000
Operating Lease, Right-of-Use Asset	2,209,000	$ 0
Operating Lease, Liability, Current	$ 2,279,000	$ 0
Operating Lease, Weighted Average Remaining Lease Term	6 years 1 month
Lessee, Operating Lease, Discount Rate	2.94%
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract	65 months
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	8 months
Lessee, Operating Lease, Renewal Term	3 years
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	5 years 3 months
Lessee, Operating Lease, Renewal Term	5 years